Explanation Given: The chart shows the eight cylinders Acetylene pressure (in psi): Cylinder Acetylene Cylinder Pressure (in psi) A 12 B 13 C 15 D 10 E 14 F 15 G 11 H 12 Formula used: Mean: Mean = sum of the data values number of data values Standard deviation: Standard deviation ( s ) = sum of ( x − x ¯ ) 2 n − 1 In the formula, x ¯ denotes the mean, ( x − x ¯ ) denotes the deviation from the mean and n is the number of values in the set. Calculation: The data set of acetylene pressure is 12, 13, 15, 10, 14, 15, 11, and 12. The number of data values is 8. That is n = 8 . Add all the data values for ‘sum of data values’ and substitute 8 for ‘number of data values’ in the mean formula. Mean ( x ¯ ) = 12 + 13 + 15 + 10 + 14 + 15 + 11 + 12 8 = 102 8 = 12.75 The deviation from the mean and square of deviation is, Data ( x − x ¯ ) ( x − x ¯ ) 2 12 ( 12 − 12.75 ) = − 0.75 ( − 0.75 ) 2 = 0.5625 13 ( 13 − 12.75 ) = 0.25 ( 0

Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)

11th Edition

ISBN: 9780134756967

Author: Hal Saunders, Robert Carman

Publisher: PEARSON

See similar textbooks

Concept explainers

Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could co…

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a…

Videos

Question

Chapter 12.3, Problem 8EE

To determine

The standard deviation of the pressure measurements.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 12.3, Problem 7EE

Chapter 12.3, Problem 9EE

Students have asked these similar questions

A population that is uniformly distributed between a=0and b=10 is given in sample sizes 50( ), 100( ), 250( ), and 500( ). Find the sample mean and the sample standard deviations for the given data. Compare your results to the average of means for a sample of size 10, and use the empirical rules to analyze the sampling error. For each sample, also find the standard error of the mean using formula given below. Standard Error of the Mean =sigma/Root Complete the following table with the results from the sampling experiment. (Round to four decimal places as needed.) Sample Size Average of 8 Sample Means Standard Deviation of 8 Sample Means Standard Error 50 100 250 500

survey of 5050 young professionals found that they spent an average of $20.5620.56 when dining out, with a standard deviation of $11.4111.41. Can you conclude statistically that the population mean is greater than $2323? Use a 95% confidence interval. Question content area bottom Part 1 The 95% confidence interval is left bracket nothing comma nothing right bracketenter your response here, enter your response here. As $2323 is ▼ of the confidence interval, we ▼ can cannot conclude that the population mean is greater than $2323. (Use ascending order. Round to four decimal places as needed.)

1. vector projection. Assume, ER1001 and you know the following: ||||=4, 7=-0.5.7. For each of the following, explicitly compute the value. འབ (a) (b) (c) (d) answer. Explicitly compute ||y7||. Explain your answer. Explicitly compute the cosine similarity of and y. Explain your Explicitly compute (x, y). Explain your answer. Find the projection of onto y and the projection of onto .

Chapter 12 Solutions

Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)

Ch. 12.1 - Solve: 0.82=x100 Ch. 12.1 - Prob. 2LC Ch. 12.1 - Automotive Trades The following bar graph shows...Ch. 12.1 - Trades Management The following graph shows the...Ch. 12.1 - General Interest The following double bar graph...Ch. 12.1 - General Interest The following stacked bar graph...Ch. 12.1 - Allied Health When Dr. Friedrich began working at...Ch. 12.1 - Automotive Trades The following line graph shows...Ch. 12.1 - Construction The following double-line graph...Ch. 12.1 - General Interest Study the circle graph at the top...

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.

The standard deviation of the pressure measurements.

Solution Summary: The chart shows the eight cylinders Acetylene Cylinder Pressure (in psi).

Concept explainers

Videos

The standard deviation of the pressure measurements.

Want to see the full answer?

Chapter 12 Solutions